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add support for independent dns services for multiple network devices

This commit is contained in:
Evlers 2024-09-13 11:00:29 +08:00
parent a0e1f954c8
commit ef711b623d
6 changed files with 122 additions and 15 deletions
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65
components/net/lwip/lwip-2.1.2/src/core/dns.c
View File

@ -99,6 +99,10 @@
#include <rtthread.h>
#ifdef RT_USING_NETDEV
#include "netdev.h"
#endif
/** Random generator function to create random TXIDs and source ports for queries */
#ifndef DNS_RAND_TXID
#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_XID) != 0)
@ -300,7 +304,9 @@ static u8_t dns_last_pcb_idx;
static u8_t dns_seqno;
static struct dns_table_entry dns_table[DNS_TABLE_SIZE];
static struct dns_req_entry dns_requests[DNS_MAX_REQUESTS];
#ifndef RT_USING_NETDEV
static ip_addr_t dns_servers[DNS_MAX_SERVERS];
#endif
#if LWIP_IPV4
const ip_addr_t dns_mquery_v4group = DNS_MQUERY_IPV4_GROUP_INIT;
@ -364,21 +370,25 @@ dns_setserver(u8_t numdns, const ip_addr_t *dnsserver)
{
if (numdns < DNS_MAX_SERVERS) {
if (dnsserver != NULL) {
dns_servers[numdns] = (*dnsserver);
#ifdef RT_USING_NETDEV
extern struct netif *netif_list;
extern struct netdev *netdev_get_by_name(const char *name);
extern void netdev_low_level_set_dns_server(struct netdev *netdev, uint8_t dns_num, const ip_addr_t *dns_server);
struct netif *netif = NULL;
/* set network interface device DNS server address */
for (netif = netif_list; netif != NULL; netif = netif->next) {
netdev_low_level_set_dns_server(netdev_get_by_name(netif->name), numdns, dnsserver);
netdev_set_dns_server(netdev_get_by_name(netif->name), numdns, dnsserver);
}
#else
dns_servers[numdns] = (*dnsserver);
#endif /* RT_USING_NETDEV */
} else {
#ifdef RT_USING_NETDEV
struct netif *netif = NULL;
for (netif = netif_list; netif != NULL; netif = netif->next) {
netdev_set_dns_server(netdev_get_by_name(netif->name), numdns, IP_ADDR_ANY);
}
#else
dns_servers[numdns] = *IP_ADDR_ANY;
#endif
}
}
}
@ -395,7 +405,11 @@ const ip_addr_t *
dns_getserver(u8_t numdns)
{
if (numdns < DNS_MAX_SERVERS) {
#ifdef RT_USING_NETDEV
return &netdev_default->dns_servers[numdns];
#else
return &dns_servers[numdns];
#endif
} else {
return IP_ADDR_ANY;
}
@ -770,11 +784,19 @@ dns_send(u8_t idx)
u8_t n;
u8_t pcb_idx;
struct dns_table_entry *entry = &dns_table[idx];
const ip_addr_t *dns_addr;
LWIP_DEBUGF(DNS_DEBUG, ("dns_send: dns_servers[%"U16_F"] \"%s\": request\n",
(u16_t)(entry->server_idx), entry->name));
LWIP_ASSERT("dns server out of array", entry->server_idx < DNS_MAX_SERVERS);
if (ip_addr_isany_val(dns_servers[entry->server_idx])
#ifdef RT_USING_NETDEV
dns_addr = &netdev_default->dns_servers[entry->server_idx];
#else
dns_addr = &dns_servers[entry->server_idx];
#endif
if (ip_addr_isany(dns_addr)
#if LWIP_DNS_SUPPORT_MDNS_QUERIES
&& !entry->is_mdns
#endif
@ -859,7 +881,11 @@ dns_send(u8_t idx)
#endif /* LWIP_DNS_SUPPORT_MDNS_QUERIES */
{
dst_port = DNS_SERVER_PORT;
dst = &dns_servers[entry->server_idx];
dst = dns_addr;
#ifdef RT_USING_NETDEV
/* set netif index for this pcb, specify the network interface corresponding to the DNS server */
dns_pcbs[pcb_idx]->netif_idx = netif_get_index((struct netif *)netdev_default->user_data);
#endif
}
err = udp_sendto(dns_pcbs[pcb_idx], p, dst, dst_port);
@ -1040,10 +1066,17 @@ dns_backupserver_available(struct dns_table_entry *pentry)
u8_t ret = 0;
if (pentry) {
if ((pentry->server_idx + 1 < DNS_MAX_SERVERS) && !ip_addr_isany_val(dns_servers[pentry->server_idx + 1])) {
if ((pentry->server_idx + 1 < DNS_MAX_SERVERS)) {
#ifdef RT_USING_NETDEV
const ip_addr_t *dns_addr = &netdev_default->dns_servers[pentry->server_idx + 1];
#else
const ip_addr_t *dns_addr = &dns_servers[pentry->server_idx + 1];
#endif
if (!ip_addr_isany(dns_addr)) {
ret = 1;
}
}
}
return ret;
}
@ -1230,9 +1263,14 @@ dns_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr,
if (!entry->is_mdns)
#endif /* LWIP_DNS_SUPPORT_MDNS_QUERIES */
{
#ifdef RT_USING_NETDEV
const ip_addr_t *dns_addr = &netdev_default->dns_servers[entry->server_idx];
#else
const ip_addr_t *dns_addr = &dns_servers[entry->server_idx];
#endif
/* Check whether response comes from the same network address to which the
question was sent. (RFC 5452) */
if (!ip_addr_cmp(addr, &dns_servers[entry->server_idx])) {
if (!ip_addr_cmp(addr, dns_addr)) {
goto ignore_packet; /* ignore this packet */
}
}
@ -1631,8 +1669,13 @@ dns_gethostbyname_addrtype(const char *hostname, ip_addr_t *addr, dns_found_call
if (!is_mdns)
#endif /* LWIP_DNS_SUPPORT_MDNS_QUERIES */
{
#ifdef RT_USING_NETDEV
const ip_addr_t *dns_addr = &netdev_default->dns_servers[0];
#else
const ip_addr_t *dns_addr = &dns_servers[0];
#endif
/* prevent calling found callback if no server is set, return error instead */
if (ip_addr_isany_val(dns_servers[0])) {
if (ip_addr_isany(dns_addr)) {
return ERR_VAL;
}
}

9
components/net/lwip/lwip-2.1.2/src/core/ipv4/dhcp.c
View File

@ -673,7 +673,16 @@ dhcp_handle_ack(struct netif *netif, struct dhcp_msg *msg_in)
for (n = 0; (n < LWIP_DHCP_PROVIDE_DNS_SERVERS) && dhcp_option_given(dhcp, DHCP_OPTION_IDX_DNS_SERVER + n); n++) {
ip_addr_t dns_addr;
ip_addr_set_ip4_u32_val(dns_addr, lwip_htonl(dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_DNS_SERVER + n)));
#ifdef RT_USING_NETDEV
extern struct netdev *netdev_get_by_name(const char *name);
extern void netdev_set_dns_server(struct netdev *netdev, uint8_t dns_num, const ip_addr_t *dns_server);
/* Here we only need to set the dns server of the corresponding network device,
* but do not need to configure all network devices.
*/
netdev_set_dns_server(netdev_get_by_name(netif->name), n, &dns_addr);
#else
dns_setserver(n, &dns_addr);
#endif
}
#endif /* LWIP_DHCP_PROVIDE_DNS_SERVERS */
}

9
components/net/lwip/lwip-2.1.2/src/core/ipv6/dhcp6.c
View File

@ -538,7 +538,16 @@ dhcp6_handle_config_reply(struct netif *netif, struct pbuf *p_msg_in)
}
ip6_addr_assign_zone(dns_addr6, IP6_UNKNOWN, netif);
/* @todo: do we need a different offset than DHCP(v4)? */
#ifdef RT_USING_NETDEV
extern struct netdev *netdev_get_by_name(const char *name);
extern void netdev_set_dns_server(struct netdev *netdev, uint8_t dns_num, const ip_addr_t *dns_server);
/* Here we only need to set the dns server of the corresponding network device,
* but do not need to configure all network devices.
*/
netdev_set_dns_server(netdev_get_by_name(netif->name), n, &dns_addr);
#else
dns_setserver(n, &dns_addr);
#endif
}
}
/* @ todo: parse and set Domain Search List */

20
components/net/lwip/lwip-2.1.2/src/core/ipv6/nd6.c
View File

@ -776,14 +776,32 @@ nd6_input(struct pbuf *p, struct netif *inp)
if (htonl(rdnss_opt->lifetime) > 0) {
/* TODO implement Lifetime > 0 */
#ifdef RT_USING_NETDEV
extern struct netdev *netdev_get_by_name(const char *name);
extern void netdev_set_dns_server(struct netdev *netdev, uint8_t dns_num, const ip_addr_t *dns_server);
/* Here we only need to set the dns server of the corresponding network device,
* but do not need to configure all network devices.
*/
netdev_set_dns_server(netdev_get_by_name(inp->name), rdnss_server_idx++, &rdnss_address);
#else
dns_setserver(rdnss_server_idx++, &rdnss_address);
#endif
} else {
/* TODO implement DNS removal in dns.c */
u8_t s;
for (s = 0; s < DNS_MAX_SERVERS; s++) {
const ip_addr_t *addr = dns_getserver(s);
if(ip_addr_cmp(addr, &rdnss_address)) {
dns_setserver(s, NULL);
#ifdef RT_USING_NETDEV
extern struct netdev *netdev_get_by_name(const char *name);
extern void netdev_set_dns_server(struct netdev *netdev, uint8_t dns_num, const ip_addr_t *dns_server);
/* Here we only need to set the dns server of the corresponding network device,
* but do not need to configure all network devices.
*/
netdev_set_dns_server(netdev_get_by_name(inp->name), s, IP_ADDR_ANY);
#else
dns_setserver(s, IP_ADDR_ANY);
#endif
}
}
}

25
components/net/lwip/lwip-2.1.2/src/netif/ppp/ppp.c
View File

@ -24,7 +24,8 @@
*
******************************************************************************
* REVISION HISTORY
*
* 24-09-12 Evlers <1425295900@qq.com>
* add support for independent dns services for multiple network devices
* 03-01-01 Marc Boucher <marc@mbsi.ca>
* Ported to lwIP.
* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
@ -134,6 +135,9 @@
#if PPP_IPV6_SUPPORT
#include "netif/ppp/ipv6cp.h"
#endif /* PPP_IPV6_SUPPORT */
#ifdef RT_USING_NETDEV
#include "netdev.h"
#endif /* RT_USING_NETDEV */
/*************************/
/*** LOCAL DEFINITIONS ***/
@ -1109,9 +1113,20 @@ int sdns(ppp_pcb *pcb, u32_t ns1, u32_t ns2) {
LWIP_UNUSED_ARG(pcb);
ip_addr_set_ip4_u32_val(ns, ns1);
#ifdef RT_USING_NETDEV
/* Here we only need to set the dns server of the corresponding network device,
* but do not need to configure all network cards.
*/
netdev_set_dns_server(netdev_get_by_name(pcb->netif->name), 0, &ns);
#else
dns_setserver(0, &ns);
#endif
ip_addr_set_ip4_u32_val(ns, ns2);
#ifdef RT_USING_NETDEV
netdev_set_dns_server(netdev_get_by_name(pcb->netif->name), 1, &ns);
#else
dns_setserver(1, &ns);
#endif
return 1;
}
@ -1127,12 +1142,20 @@ int cdns(ppp_pcb *pcb, u32_t ns1, u32_t ns2) {
nsa = dns_getserver(0);
ip_addr_set_ip4_u32_val(nsb, ns1);
if (ip_addr_cmp(nsa, &nsb)) {
#ifdef RT_USING_NETDEV
netdev_set_dns_server(netdev_get_by_name(pcb->netif->name), 0, IP_ADDR_ANY);
#else
dns_setserver(0, IP_ADDR_ANY);
#endif
}
nsa = dns_getserver(1);
ip_addr_set_ip4_u32_val(nsb, ns2);
if (ip_addr_cmp(nsa, &nsb)) {
#ifdef RT_USING_NETDEV
netdev_set_dns_server(netdev_get_by_name(pcb->netif->name), 1, IP_ADDR_ANY);
#else
dns_setserver(1, IP_ADDR_ANY);
#endif
}
return 1;
}

7
components/net/lwip/port/ethernetif.c
View File

@ -15,6 +15,7 @@
* 2018-11-02 MurphyZhao port to lwIP 2.1.0
* 2021-09-07 Grissiom fix eth_tx_msg ack bug
* 2022-02-22 xiangxistu integrate v1.4.1 v2.0.3 and v2.1.2 porting layer
* 2024-09-12 Evlers add support for independent dns services for multiple network devices
*/
/*
@ -169,8 +170,11 @@ static int lwip_netdev_set_addr_info(struct netdev *netif, ip_addr_t *ip_addr, i
}
#ifdef RT_LWIP_DNS
static int lwip_netdev_set_dns_server(struct netdev *netif, uint8_t dns_num, ip_addr_t *dns_server)
static int lwip_netdev_set_dns_server(struct netdev *netdev, uint8_t dns_num, ip_addr_t *dns_server)
{
#if RT_USING_LWIP_VER_NUM >= 0x20102
netdev_low_level_set_dns_server(netdev, dns_num, dns_server);
#else
#if LWIP_VERSION_MAJOR == 1U /* v1.x */
extern void dns_setserver(u8_t numdns, ip_addr_t *dnsserver);
#else /* >=2.x */
@ -178,6 +182,7 @@ static int lwip_netdev_set_dns_server(struct netdev *netif, uint8_t dns_num, ip_
#endif /* LWIP_VERSION_MAJOR == 1U */
dns_setserver(dns_num, dns_server);
#endif /* RT_USING_LWIP_VER_NUM >= 0x20102 */
return ERR_OK;
}
#endif /* RT_LWIP_DNS */